Backstage requirements have changed a lot since the days when Van Halen demanded the removal of all brown M&Ms. Mariah Carey has been known to ask for kittens. Madonna apparently likes brand new toilet seats. And Katy Perry? The Smoking Gun got hold of the 45-page concert rider for her tour, and it includes such provisions as a dressing room swathed in creamy or soft pink fabric and decorated with two cream-colored egg chairs and a footstool. Mrs. Russell Brand also has very particular taste in flowers, asking for arrangements with "white and purple hydrangeas, pink [and] white roses and peonies," or, barring that, "a selection of seasonal white flowers to include white orchids." Just don't try to slip any cheap blossoms her way. The rider stipulates "ABSOLUTELY NO CARNATIONS."